You are recommended to visit all of them, because the same plant is often offered for very different prices. Be sure to check the parameters of the plants over the web, because not each company has beautiful labels, but nevertheless they may sell very good plants. We, for example, bought most of our bulbs many years ago from Etter Kft where packing is not that beautiful, but they had very high quality plants for a very reasonable price. Many companies offer botanical tulips. Fosteriana, Kaufmanniana and Gerigii hybrids are just as large and beautiful as the other tulips, but you don’t have to pick them up every year, but you can (moreover, should) leave them in the soil, and they propagate well in the garden. By now I keep almost only such tulips.